#include <iostream>
using namespace std;
int a[] = { 99, 22, 51, 63, 72, 61, 20, 88, 40, 21, 63, 30, 11, 18, 99, 12, 93, 16, 7, 53, 64, 9, 28, 84, 34, 96, 52, 82, 51, 77 };
int main()
{
	int ans = 0;
	for (int i = 0; i < 29; i++) {
		for (int j = i + 1; j < 30; j++) {
			if (a[i] * a[j] >= 2022)ans++;
		}
	}
	cout << ans << endl;
	return 0;
}